One of my tickets had "endorseable BA CX QF etc...." on it. From what I can tell about how people don't like working on these tickets, I would guess they would just take the ticket and not worry with it.
Rich and IonMan - I had AA print the fare rules for me three days before I left and I remember reading about the connection change. I have them at home and will reread them just in case I am wrong.
Jimboliguy - Change it to CX !!!!!!!